Boston Partners
- SEC CIK
- 0001386060
- Latest filing
- Aug 4, 2026
AMG holding history
Affiliated Managers Group, Inc. in every 13F filed by Boston Partners, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.
AMG overviewAll 13F holders of AMGFull Q2 2026 holdings
- Shares (Q2 2026)
- 1,001,967
- Value
- $339.1M
- % of portfolio
- 0.3%
- Quarters held
- 9
- Since Q2 2024
| Quarter | Shares | Value | % of portfolio | Share change | Action | All holders |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,001,967 | $339.1M | 0.3% | +30,720+3.2% | Added | Holders |
| Q1 2026 | 971,247 | $268.7M | 0.3% | −165,463−14.6% | Reduced | Holders |
| Q4 2025 | 1,136,710 | $327.8M | 0.3% | −20,634−1.8% | Reduced | Holders |
| Q3 2025 | 1,157,344 | $276.0M | 0.3% | +24,217+2.1% | Added | Holders |
| Q2 2025 | 1,133,127 | $223.0M | 0.2% | −21,664−1.9% | Reduced | Holders |
| Q1 2025 | 1,154,791 | $194.0M | 0.2% | −29,339−2.5% | Reduced | Holders |
| Q4 2024 | 1,184,130 | $219.0M | 0.3% | +373,696+46.1% | Added | Holders |
| Q3 2024 | 810,434 | $144.1M | 0.2% | +89,646+12.4% | Added | Holders |
| Q2 2024 | 720,788 | $112.6M | 0.1% | +720,788 | New | Holders |